About Blue Hole
Blue Hole is a scenic Sauk County lake worth knowing about, covering 0.98 acres. Access is limited, which keeps boat traffic low — a plus for solitude seekers.
Type: lake
Lake Location
43.19710° N, 90.00950° W
WBIC 972170 · Wisconsin DNRLocal's Guide
Fishing
Species-specific tips above. Wisconsin fishing license required for ages 16+. See current season regulations below.
View fishing regulations ↓Swimming
Blue Hole has limited visibility and a mixed bottom, making it generally good for swimming with gradual entry in most areas. The 0.98-acre lake offers a quieter, more intimate swimming experience.
Nearby Dining
Local dining recommendations for Blue Hole are coming soon. Know a great spot near Blue Hole? Share it at staynorthern.com/contact. Looking for restaurants near Sauk County lakes? Visit staynorthern.com/eats for our full northwoods dining guide.
Insider Tips
Blue Hole is one of Sauk County's lesser-known gems — the kind of place locals return to year after year. Early mornings before 9am offer the calmest water and best fishing before boat traffic picks up. If you're visiting for the first time, check the DNR boat landing locations before you arrive — some are well-marked, others take a local to find. Know something about Blue Hole that visitors should? Share a tip at staynorthern.com/contact — we add the best ones to this page.
Lake Conditions
Water Clarity
—
No data
Trophic Status
—
No data
Invasive Weeds
Not documented
Clean lake
Seasonal Notes
See below
Ice-out dates, peak fishing windows
Ice out arrives in late March to early April on southern Wisconsin lakes. Bass and panfish fishing is excellent from early May onward. Swimming season runs from early June through September. Fall color peaks in mid-October. Ice fishing is possible in most winters but season length varies — check conditions before heading out.
Condition data sourced from Wisconsin DNR surveys. Real-time weed and clarity reports coming soon.
Frequently Asked Questions
Can you boat on Blue Hole?
Blue Hole does not currently have a public boat landing listed in the Wisconsin DNR database. Shore fishing or kayak/canoe access may still be available — check local access points.
How big is Blue Hole?
Blue Hole has 0.98 acres in surface area.
Are there invasive species in Blue Hole?
No invasive species are currently documented in Blue Hole by the Wisconsin DNR. Always clean, drain, and dry your boat before leaving to help protect this lake.
Where is Blue Hole located?
Blue Hole is located in Sauk County, Wisconsin. GPS coordinates: 43.1971° N, 90.0095° W.
Are there vacation rentals on Blue Hole?
Stay Northern is building the most complete rental directory for Sauk County lakes. Check our Blue Hole vacation rentals listing — if none are available yet, check back soon or browse nearby Sauk County lake rentals.
Fishing Regulations
Current season regulations for Blue Hole
| Species | Season | Min. Length | Daily Bag |
|---|---|---|---|
| Bullheads | Open All Year | No minimum length limit and the daily bag limit is unlimited. | — |
| Catfish | Open All Year | No minimum length limit and the daily bag limit is 10. | — |
| Cisco And Whitefish | Open All Year | No minimum length limit and the daily bag limit is 10. | — |
| Lake Sturgeon | Closed | No fishing allowed. | — |
| Largemouth Bass And Smallmouth Bass | Open All Year | The minimum length limit is 14" and the daily bag limit is 5. | — |
| Muskellunge And Hybrids | May 2, 2026 to December 31, 2026 on open water | The minimum length limit is 40" and the daily bag limit is 1. | — |
| Northern Pike | Open All Year | The minimum length limit is 26" and the daily bag limit is 2. | — |
| Paddlefish | Closed | No fishing allowed. | — |
| Panfish | Open All Year | No minimum length limit and the daily bag limit is 25. | — |
| Rock, Yellow, And White Bass | Open All Year | No minimum length limit and the daily bag limit is unlimited. | — |
| Rough Fish | Open All Year | No minimum length limit and the daily bag limit is unlimited. | — |
| Round Goby | Open All Year | The daily bag limit is 0, one may be killed and possessed for transport to a WDNR Office. | — |
| Ruffe | Open All Year | The daily bag limit is 0, one may be killed and possessed for transport to a WDNR Office. | — |
| Shovelnose Sturgeon | Closed | No fishing allowed. | — |
| Trout | See specific regulations | https://dnr.wisconsin.gov/topic/fishing/trout/ . | — |
| Walleye, Sauger, And Hybrids | Open All Year | Three walleye and sauger may be kept. Sauger must be at least 15" and walleye must be at least 18". | — |
| White Perch | Open All Year | The daily bag limit is 0, one may be killed and possessed for transport to a WDNR Office. | — |
Regulations sourced from Wisconsin DNR fisheries data. Always verify current regulations before fishing.
Lake Details
- WBIC
- 972170
- County
- Sauk County
- Surface Area
- 0.98 acres
- Lake Type
- lake
- Coordinates
- 43.1971, -90.0095
Boat Rentals Nearby
Pontoon
Listing soonFishing Boat + Motor
Listing soonKayak / Canoe
Listing soonKnow a local boat rental operator near Blue Hole? Let us know.
Lake data sourced from the Wisconsin DNR. Last updated 4/30/2026.